Ughh I am super annoyed right now. Being a 17 yo teen, no adults would really listen and heed your advice.
My dad has been keeping fishes even before I was born. Naturally, he influenced me and I began keeping fishes ever since I was 8. As I grew older to become a teen now, I was constantly fascinated by aquariums and wanted to know more about them. So there I was frequenting the libraries, articles and forums about aquaria care, learning more and more about the science behind them each day.
With each knowledge gained, I realised that the ways we had been keeping aquariums were horribly wrong (we didn't cycle the aquarium, put incompatible or too large fish in there etc). However, my dad would not accept any of my explanations...
Recently, I was setting up a nano tank (4 gallons) for my dad due to a lack of space. He did not really understand the importance of a light source and plants in a closed system, thus we had a squabble there. Yesterday, I traveled to a local LFS to get the lightings and met my dad there coincidentally. He wanted to buy a flowerhorn cichlid to put into nano! Luckily, I was there to stop him. I planned to get the plants on Monday, but I did not expect my dad to come home today with 3 mid-sized angelfish. I was shocked, and angry at the same time as he did not wait for me to establish the nano. Moreover, 3 angels in a 4 gallon? Wow. I didn't bother to explain, knowing that he would not listen.
This was not the first time. Every time I tried to correct him, he would always reply "In the past I did it the same way, and nothing bad happened.", "You read too much", "Don't listen to the online crap...". Furthermore, my mom would stop me to explain more as my dad has a heart condition, afraid that we would have an argument that would infuriate him.
Most LFS in my country are profit driven and don't even know the proper aquarium world of knowledge. I witnessed many children with their parents cajoled by the store assistant into purchasing fish that are incompatible with their aquariums (most of the time are nano plastic tanks). I tried offering advice once, but they would just go "Oh, I see.." and nevertheless continue to follow that EVIL shop assistant. "It's just a kid, how much does he know anyway", they would think.
If only adults would listen to me for once